Branch fitting for providing access to the interior of a pipe
US4411459A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 29, 1981 |
| Grant date | Oct 25, 1983 |
| Priority date | — |
| Expiry date | Jun 29, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/6123
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A branch fitting for providing access to the interior of a pipe, the fitting having first and second body portions each having a semi-cylindrical surface adapted to sealably engage the pipe, the body portions being secured together and to the pipe in a pressure retaining relationship, one body portion having a first and second integral cylindrical barrel portion extending in the plane of the tubular axis of the pipe, the cylindrical axii of the barrel portions intersecting each other at a point at or adjacent the pipe wall, a cutter within one of the barrel portions having a shaft extending sealably exteriorly of the barrel portion whereby the cutter may be rotated and axially advanced to form an opening in the pipe, the opening being coincident with the cylindrical axis of the second barrel portion. The second barrel portion may contain a plugging member and means of delivering it into the interior of the pipe through the formed opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.